Global area affected by soil salinity map

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August undefined, 2024

WebSoil salinity is a major agricultural problem in global crop production [], and it has accounted for approximately 20% of the world’s cultivated area [].Furthermore, soil … WebThe total area of salt affected lands by our assessment is around 1 billion hectares, with a clear increasing trend. Comparison with 3 studies investigating local trends of soil salinity change showed that our assessment was in correspondence with 2 of these studies. ... The global map of soil salinity change between 1986 and 2016 was produced ...

Soil Salinity: Historical Perspectives and a World Overview …

WebThe salt-affected soils national map of Greece was recently made available within the initiative of the Global Soil Partnership (GSP) of Food and Agriculture Organization of the United Nations FAO. ... areas with p > 0.80 for the occurrence of saline soils accounting for ∼20% of a total area of 169.51 km2 of the croplands in Lesvos. The ... WebJan 1, 2024 · Soil salinity is one of the main barriers to increasing global food production as it reduces crop growth and productivity. While irrigated lands in arid climates (about 20% of total affected) are ... focus design builders wake forest nc

Soil salinity Global Soil Partnership Food and …

Webard indices giving information about soil salinity. Afterwards, a statistical correlation between the elec-trical conductivity data and the computed spectral indices was made. Figure 2 summarized the steps that we have followed to map the soil salinity in the study area. 3.1. Sampling and analysis Soil samples were collected during March month ... WebFeb 26, 2024 · According to the produced soil salinity map (Figure 4), the salinity is high in the north part of the study area, in proximity of the Oum Er Rbia River. Such salinity could be attributed to the use of the river saline water of Oum Er Rbia that is used in irrigation, and subsequently, affected agricultural soil by salinization (Faouzi & Larabi ... WebAug 1, 2024 · According to the FAO, the global area of salt-affected soils covers 424 million hectares of topsoil (0–30 cm) and 833 million hectares of subsoil ... We reclassified the global map of saline soils based on soil salinity levels. If the salinity was between 2 and 4 dS/m EC e, it was classified as low salinity. Sensitive crops can be affected ... focus daily trial contact lenses

Present Scenario of Global Salt Affected Soils, its Management …

WebApr 8, 2024 · Soil sodicity is a constraint of global significance. It has recently been estimated that sodicity, expressed as an exchangeable sodium percentage (ESP) greater than 6%, occurs in surface soils (0–30 cm) in at least 75% of years on approximately 9.2 Mkm 2 of land, with the most severely affected continents being Asia, Africa and … WebApr 29, 2024 · The global coverage area of salt-affected soils is around 1060.1 million ha [10]. Salinity was reported on 1518722 ha of the land in Turkey, and saline soils constitute 5.48% of the total ... focused aggressionWebApr 13, 2024 · Total unvegetated area was estimated for all NAIP images and the 2016 WorldView-3, and 2024 PlanetScope satellite images. We visually inspected the coordinates of vegetated and unvegetated points (median observations per year: 218) using high-resolution images at a scale of 1:500 to 1:1000 in QGIS 3.16.5 (QGIS.org, 2024).Raster … focus.dealer.reyrey.net

"WebMar 16, 2024 · Clearly, SSA is more affected by soil-related insecurities, wherein, for example, a country like Egypt decreased the land area under rice cultivation from about 0.45 million hectares in the 2016 season to only 294,117 hectares in 2024, which has remained in effect to date due to non-abating of the water scarcity problem that was induced by ... " - Global area affected by soil salinity map

Global area affected by soil salinity map

Restoration and resilience to sea level rise of a salt marsh affected ...

WebRegular monitoring of soil salinity is necessary to appropriately deal with the problem; although, it is somewhat testing to identify the essential ground data in the areas affected by salinity (Bilgili et al., 2011; Singh, 2014, 2016a, 2016b). Because soil salinity has high variability in time and space. Web2 days ago · Most of the study area was lightly affected by salinity. Around 30% of the study area was moderately affected, and the heavily affected areas were sporadically scattered across the study area ...

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WebOct 6, 2024 · Around 6.74 million ha area in the country is salt-affected. Estimates suggest that every year nearly 10% additional area is getting salinized, and by 2050, around 50% of the arable land would be salt-affected. Saline soils occupy 44% area covering 12 states and one Union Territory, while sodic soils occupy 47% area in 11 states. WebMay 4, 2024 · Although an earlier estimate shows that there were 932.2 million hectares of salt affected soils, including 351.5 M ha saline and 581.0 M ha sodic soils according FAO report of 2000, the total global area of salt-affected soils including saline and sodic soils was 831 million hectares (Martinez-Beltran and Manzur 2005), extending over all the ...

WebNov 29, 2024 · Salt contamination, which leads to stunted and uneven plant growth, is already estimated to affect 20 percent of cultivated land worldwide. Climate change drives soil salinization in several ways ... WebNov 18, 2024 · According to the global-scale studies, salt-affected soils lie across all climate zones and continents with an estimated global area of ~8.31–11.73 Mkm 2, …

WebJan 31, 2024 · In past 25 years, rise in sea levels has resulted in 33% increase in salinity level in coastal areas (Rahman et al., 2024). Recent data have revealed that 1125 million hectares of land area in the ... WebSep 15, 2024 · The only database that currently provides soil salinity data with global coverage is the Harmonized World Soil Database, but it has several limitations when it comes to soil salinity assessment. ... The validation accuracy of the resulting maps was in the range of 67–70%. The total area of salt affected lands by our assessment is around …

WebSep 17, 2024 · Soil salinization has become one of the major environmental problems threatening food security. The identification and knowledge of the spatial distributions of soil salinization are key in addressing this problem. This study assumes that a good saline land identification effect can be obtained with the help of deep learning methods. Therefore, …

WebOct 1, 2024 · Soil salinity might have severely affected the growth of the vegetation, and from the NDVI map, the soil of the Barguna Sadar area is severely affected by the salinity. Through the Normalized Difference Vegetation Index (NDVI), which is used to express the health of the vegetation, the remote sensing data supplied quantitative information on ... focus dc brunch menuWebGlobal Symposium on Salt-affected Soils' Scientific Poster Contest. ... Poster #8 Digital assessment of soil salinity across Paraguay, Arnulfo Encina Rojas – 2762 votes ... Land capability and suitability maps of a salt affected costal area (Ravenna, Northern Italy) focused aerial photographyWebDec 22, 2024 · At the continental level, Asia (including the Middle East) had the largest area of salt-affected soils with 7.14 Mkm 2, followed by Africa with 2.292 Mkm 2, Australia … focused adhdWebDec 14, 2024 · A global analysis of the Earth over 40 years by satellite data and machine learning showed that out of the 120.4 M km 2 of non-frigid land, 9.7% is affected by salinity. This area is not small as ... focus diesel hatchbackWebDec 3, 2024 · More than 833 million hectares of soils are already salt-affected, representing around nine per cent of the world’s land surface, or roughly four times the size of India. Salt-affected soils occur in all continents, and under almost all climatic conditions, but more than two-thirds are in arid and semi-arid zones. focus day program incWebThe salinity indicators and salinity monitoring and mapping are provided, and the global cases of soil salinity management through remote sensing and GIS applications under … focus direct bacolod addressWebNov 29, 2024 · In a comprehensive overview of the global identification of salinity problems and the global salinity status, Shahid reported that about 200 × 10 6 hectares of land is affected by salinity in Southwest USA … focused advertising